Here is my problem.
1. When I try to import xerces.jar into VisualAge, import just stops in
between, it wont import all the classes, also whatever is imported into VA I
can just see the name of the packages I cannot expand them and cannot see
anything with in.
2. Then I tried to import the source, which I am able to import properly,
then I imported xalan becouse I have to use XPATHapi etc. this is fine as
well.
I have created a class for xml messaging purposes (show below) which
import many of the package from these products. So far So good, In my class
I am reading xml file and then using
// strRequest is my xml message
StringReader sr = new StringReader(strRequest);
InputSource in = new InputSource(sr);
but right at the second line above VA Debugger comes up and
complaines that noclassdefinationfound for InputSource, but InputSource
class in present in org.xml.sax package.
3. So I decide to export all my classes any complie under dos prompt,
using javac and suprise I am able to run it and getting the response back.
I am so confused.
My source code
import java.io.*;
import java.util.*;
import org.apache.xerces.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import org.apache.xml.serialize.*;
import org.apache.xpath.*;
public class BrokerEngine {
private static BrokerEngine instance = null;
private Map serviceMap;
private BrokerEngine() {
serviceMap = new HashMap();
serviceMap.put("saveInvoice", new SaveInvoiceInvoker());
}
public static synchronized BrokerEngine getInstance()
{
if(instance == null)
instance = new BrokerEngine();
return instance;
}
private Document invoke(Document doc) {
String type = null;
try {
Node node = XPathAPI.selectSingleNode(doc,
"/message/header/type/text()");
type = node.getNodeValue();
}
catch (Exception e) {
e.printStackTrace();
}
Invoker invoker = (Invoker) serviceMap.get(type);
Document response = invoker.invoke(doc);
return response;
}
//test case
public static void main (String[] args) {
if (args.length < 1) {
System.out.println("Usage: BrokerEngine <message>");
System.exit(-1);
}
StringBuffer sb = new StringBuffer();
try {
RandomAccessFile randFile = new RandomAccessFile(args[0],
"r");
String line = randFile.readLine();
while (line != null) {
sb.append(line);
line = randFile.readLine();
}
randFile.close();
}
catch (Exception e) {
e.printStackTrace();
}
BrokerEngine brokerEngine = BrokerEngine.getInstance();
System.out.println("result: \n" +
brokerEngine.serviceSync(sb.toString()));
}
public void serviceAsync (String request) {
InputSource in = new InputSource(new StringReader(request));
DOMParser parser = new DOMParser();
try {
parser.parse(in);
}
catch (Exception e) {
e.printStackTrace();
}
Document doc = parser.getDocument();
//invoke a method/procedure
invoke(doc);
}
public String serviceSync (String strRequest) {
StringReader sr = new StringReader(strRequest);
System.out.println("Entering Danger Jone");
InputSource in = new InputSource(sr);
DOMParser parser = new DOMParser();
try {
parser.parse(in);
}
catch (Exception e) {
e.printStackTrace();
}
Document request = parser.getDocument();
//invoke a method/procedure
Document response = invoke(request);
StringWriter strResponse = null;
try {
OutputFormat format = new OutputFormat(response);
strResponse = new StringWriter();
XMLSerializer serial = new XMLSerializer( strResponse,
format );
serial.asDOMSerializer();
serial.serialize(response.getDocumentElement());
}
catch (Exception e) {
e.printStackTrace();
}
return strResponse.toString();
}
}
public interface Invoker {
Document invoke (Document doc);
}
import java.io.*;
import org.apache.xerces.dom.*;
import org.apache.xml.serialize.*;
import org.w3c.dom.*;
/**
* Insert the type's description here.
* Creation date: (3/8/2001 10:41:56 AM)
* @author: Administrator
*/
public class MessageFactory {
/**
* MessageFactory constructor comment.
*/
public MessageFactory() {
super();
}
/**
* Insert the method's description here.
* Creation date: (3/8/2001 11:01:05 AM)
* @return org.w3c.dom.Document
* @param strTo java.lang.String
* @param strFrom java.lang.String
* @param strType java.lang.String
* @param strResult java.lang.String
*/
public Document createReturnMessage(String strTo, String strFrom, String
strType, String strResult) {
Document doc = new DocumentImpl();
Element message = doc.createElement("message");
Element header = doc.createElement("header");
Element to = doc.createElement("to");
header.appendChild(to);
to.appendChild(doc.createTextNode(strTo));
Element from = doc.createElement("from");
header.appendChild(from);
from.appendChild(doc.createTextNode(strFrom));
Element type = doc.createElement("type");
header.appendChild(type);
type.appendChild(doc.createTextNode(strType));
message.appendChild(header);
Element body = doc.createElement("body");
Element result = doc.createElement("result");
body.appendChild(result);
result.appendChild(doc.createTextNode(strResult));
message.appendChild(body);
doc.appendChild(message);
return doc;
}
}
import java.io.*;
import org.apache.xpath.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import org.apache.xml.serialize.*;
public class SaveInvoiceInvoker implements Invoker {
/**
* SaveInvoiceInvoker constructor comment.
*/
public SaveInvoiceInvoker() {
super();
}
/**
* Insert the method's description here.
* Creation date: (3/8/2001 10:15:41 AM)
* @return org.w3c.dom.Document
* @param doc org.w3c.dom.Document
*/
public Document invoke(Document doc) {
String strTo = null, strFrom = null, strType = null;
MessageFactory mf = new MessageFactory();
try {
Node toNode =
XPathAPI.selectSingleNode(doc,"/message/header/to/text()");
strTo = toNode.getNodeValue();
Node fromNode =
XPathAPI.selectSingleNode(doc,"/message/header/from/text()");
strFrom = fromNode.getNodeValue();
Node typeNode =
XPathAPI.selectSingleNode(doc,"/message/header/type/text()");
strType = typeNode.getNodeValue();
Node numberNode =
XPathAPI.selectSingleNode(doc,"/message/body/saveInvoice/invoice/@number");
String invoiceNumber = numberNode.getNodeValue();
Node invoiceNode =
XPathAPI.selectSingleNode(doc,"/message/body/saveInvoice/invoice");
OutputFormat format = new OutputFormat(doc);
StringWriter strInvoice = new StringWriter();
XMLSerializer serial = new XMLSerializer
(strInvoice,format);
serial.asDOMSerializer();
serial.serialize((Element) invoiceNode);
String filename = invoiceNumber + ".xml";
File file = new File(filename);
if (!file.exists()) {
RandomAccessFile randFile = new
RandomAccessFile(file,"rw");
randFile.writeBytes(strInvoice.toString());
randFile.close();
}
}
catch (Exception e) {
e.printStackTrace();
return mf.createReturnMessage(strFrom,strTo,strType,"Error
Processing");
}
return
mf.createReturnMessage(strFrom,strTo,strType,"Success");
}
}
<?xml version="1.0" ?>
- <message>
- <header>
<to>companyReceiver</to>
<from>companySender</from>
<type>saveInvoice</type>
</header>
- <body>
- <saveInvoice>
- <invoice date="01-20-2000" number="123">
- <address country="US">
<name>John Smith</name>
<street>123 George St.</street>
<city>Mountain View</city>
<state>CA</state>
<zip>94041</zip>
</address>
- <billTo country="US">
<name>Company A</name>
<street>100 Main St.</street>
<city>Washington</city>
<state>DC</state>
<zip>20015</zip>
</billTo>
- <items>
- <item number="1">
<name>IBM A20 Laptop</name>
<quantity>1</quantity>
<USPrice>2000.00</USPrice>
</item>
</items>
</invoice>
</saveInvoice>
</body>
</message>
Thanks
Munish Talwar
Tel:(514)866-0001 ext.:4319
[EMAIL PROTECTED]
-----Original Message-----
From: Steve Graham [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 08, 2001 4:05 PM
To: [email protected]
Subject: Re: Xerces in Visualage
Munish:
Yes, I use Xerces in VisualAge 3.5.
What problems are you seeing when you try to import Xerces 1.3.0?
++++++++
Steve Graham
[EMAIL PROTECTED]
(919)254-0615 (T/L 444)
Web Services Architect
Emerging Internet Technologies
++++++++
Munish Talwar <[EMAIL PROTECTED]> on 03/08/2001 03:05:21 PM
Please respond to [email protected]
To: "'[email protected]'" <[email protected]>
cc:
Subject: Xerces in Visualage
Hi,
Can anybody help me setting up my Visual age environment. I am using Visual
Age 3.5. I am not able to import Xerces 1.3.0 at all I have tried so many
times. Is their anybody using xerces in visualage
thanks in advance
MT
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